Lubricating device for gyratory crushers.



IIII II R. BERNHARD L J. M. SHOLL.

LUBRICATING DEVICE FOR GYRATORY CRUSHERS.

APPLICATION FILED ILILY 23, I9I4.

Hv/ i I L 19 II I.I m

BICI-IARD BERNHARD AND JACOB M. SI-IOIaIz, OF MILWAUKEE, WISCONSIN, ASSIG'NORS TO POWER AND MINING MACHINERY COMPANY, A CORPORATION OF NEW JERSEY.

LUBRICA'IING- DEVICE FOR GYRATORY- CRUSI-IERS.

Manner.

Specification of Letters Patent.

Patented .nuy is, 1era.

Application led July 23, 1914. Serial No. 852,535.

To all whom t may concern Be it known that we, RICHARD BERNHARD and JAooB M. SHoLL, citizens of the United States, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have -invented certain new and useful Improvements y in Lubricating Devices for Gyratory Crushers, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

The object of the present invention is to provide an efficient lubricating system for the eccentrics of gyratory crushers, and particularly for that type of crushers in which the gearing is at the bottom of the eccentric, in which it is not practical to submerge the leccentric in oil, because the gears, also,

would be under oil and, on account of their high speed, the'lubricant would be churned, heated and destroyed.

The use of oil pumps located outside the crusher is very objectionable as the countershaft rotates at high speed, and any driving connection from it must be more or less delicate and liable t0 get out of order. Gyratory Crushers, also, are operated under such conditions of dust and lack of attention that any driving connection from the countershaft would not be reliable. Moreover, such Crushers are frequently operated in the open air without any housing and during cold weather the oil in pipes outsidethe crusher will thicken and choke the pump, especially as the oil must be quite viscous in order to carry the high pressure used in such machines. Any type of pump with valves, also, cannot be used, without danger of stoppage of the oil circulation on account of the valves being prevented from seating by dirt,

and in cold weatherthe valves would not operate at all on account of the thickening bodying all the features in their preferred form, and this construction will now be described in detail, and the features forming the invention then specifically pointed out in the claims.

In the drawings, Figure 1 is a vertical central section of the crusher. Fig. 2 is a horizontal section on the line 2 of Fig. 1. Fig. 3 isa vertical sectionlon the line 3 of Fig. 2. Fig. 4 is a horizontal section taken below the pump cover and showing the gear pump in plan. Fig. is a vertical section on the line of Fig. 2. Fig. 6 is a horizontal section on the line 6 of Fig. 1.

Referring to said drawings, the crusher to which the invention is shown as applied is substantially the same as shown and fully described in United States Letters Patent y No. 960,232, dated May 31st,1910, A being the casing or shell carrying the spider B and closed at the bottom below the eccentric by theI cap C. The crushing shaft Dv carrying crushing head E is suspended in spider B and operated by the eccentric F driven by gears G, H, the latter on 'counter-shaft I. It will be understood ythat this particular crusher is shown only for purpose of illustration, and that the invention may be applied to gyratory Crushers of other types.

Referring to the parts especially embodying the invention, the eccentric F is provided at its lower end with hollow eXtension 10, which carries the oil pump. This pump consists of the two pinions 11, 12, having their vertical shafts 13, 14 mounted in block 15, secured in the eccentric eXtension 10, being shown as secured by bolts 8 passing up through the block 15 into lugs extending inward from extension 10. The shaft 14 and gear 12, are concentric with the eccentric and this shaft is provided with an arm/16, which engages a fixed stop 17 below the pump, so that this armholds the gear 12 vfrom rotating during the rotation of the eccentric, while the gear 11 is rotated by engagement with stationary gear 12 as the gear 11 is carried about gear 12 by the eccentric. The gears 11, 12 are in an oil chamber 18, having bottom and top walls 19, 20, provided with openings 1 2. below and above the gears, the opening 1 admitting oil from oil chamber 21 below the eccentric and on one side of the gears, and opening 2 discharging oil from the other side of the gears to space 22 abovel the pump within the hollow extension of the lll@ i eccentric below the shaft D. As these gyrato oil this inner bearing, Iand to the top of tory crushers may be operated in either direction, duplicate openings 1, 2, are preferably provided, as shownin Fig. 5, so that either pair of openings can be used according to the direction of rotation of theec` centric, the pair of openings not in use being closed by plugs 3. The oil forced up ward by the pump into space 22, flows upward through passages 4 between the shaft D and the inner side of the eccentric, so as the eccentric from which it flows down through passages 5 between the.outer side of the eccentric and the eccentric hub, so as to oil the outer bearing of the eccentric, and returning to the hollow space within cap C and to chamber 21 belowv the pump by passages 6. The pump capacity is larger than that of passages 5, so that the oil collects on the top of the eccentric and overflows through passages 7 to the gear chamber so as to oil the gears G, H, while at the same time not submerging the gears, the level of. -the oil preferably being just below the gears. A settling chamber for sediment,

. which readily may be cleaned, is preferably A pfrovided by the removable 4-cover 23 closing lso "theoil chamber 21 below the pump. Wear; ing ring 9 for the lower end of extension ?10 is preferably used and provided with oil grooves for lubrication.

It will be understood that the invention .is not to be limited to the-exact form or arrangement of parts shown, but that 'many modifications may be made in the construction and arrangement'of the pump and oil passages without departing from the invention.

What we claim is: y

1. In a gyratory crusher, the combination with the eccentric, .of lubricating devices for the eccentric including a lubricant pump located within the casing and operated by the eccentric.

. 2. In a gyratory crusher, the `combination with thev eccentric, of lubricating devices for the eccentric including a lubricant pilmp located below and operated bythe eccentric, and passages by which the lubricant is forced by the pump to .the top of lthe eccentric and the outer and 4inner bear- -ings of the eccentric lubricated.

3'. Ina gyratory crusher, the combination with the eccentric, of lubricating devices for the eccentric including a lubricant pump located below and operated by the eccentric, passages by which the lubricant is forced bythe pump through one bearing of the` eccentric to the top of the eccentric, and passages through which the lubricant returns through the other bearing of the eccentric. Y

4. In a gyratory crusher, the combination with the eccentric, of lubricatin de-l vices for the eccentric including a lubrlcant pumplocated below and operated by the eccentric, oil passages by which the lubricant is forced by the pump through the inne!` bearing to the top of the eccentric, passages through which the oil returns through the outer bearing of the eccentric, and passages through which the oil lows from the top of' lthrough which the lubricant is fed by the pump to the top of the eccentric for lubricating the eccentric` bearings.

7 In a gyratory crusher, the combination with the eccentric, of a valveless submerged rotarylubricant pump located below and operated by the eccentric, reversible inlet and outlet passages'for operating thepump by rotation of the eccentric in either direction, and passages through which the lubricant is fed by the pump to the top of the eccentric for lubricating the eccentric bearings.

gear pump formed by gears 11, 12 carried by the lower end of the eccentric, one of said gears being concentric with the eccentric Iand held stationary and the other rotating thereon, alubricant chamber for said pump, and passages through which the lubricant is circulated for lubricating the eccentric bear- 1n s.

In testimony whereof, we have hereunto Aset our hands, in the presence of two subscribing witnesses.4

RICHARD BERNHARD. JACOB M. SHOLL.

Witnesses:

JOHN BOLAND, E. J. DIRKSMEYER.

8. The combination with eccentric E, of a' 

